Teardrop craft hovered in sky and then darted into a cloud and didn't come out.

Traveling north on I-15, in Utah. Teardrop shaped object appeared to left of freeway, and appeared to have a very shiny, chromelike surface. I watched it, trying to figure out what it was as it hovered there in the sky. Then, after staring at it for about 30 seconds, it darted into a nearby cloud, extrememly fast from a hovering position. I watched the cloud intently for about 30 minutes, wishing it would come out, and it did not. I was not afraid, which surprised me, and found myself just staring and wishing it would come out so I could see it again. It almost felt like it knew I was watching, and then darted in to a cloud to hide. (Wierd, I know.) Feel free to contact me if you wish.